Respiration is accompained by

Options

A. Increase in weight
B. Decrease in weight
C. No change in weight
D. Decrease in size

Answer

**Step-by-Step Solution:**

1. **Understanding Respiration**: Respiration is a biochemical process that involves the breakdown of glucose and other organic molecules to release energy. It is essential for the survival of living organisms as it provides the energy needed for various cellular processes.

2. **Types of Substrates**: While glucose is the primary substrate used in respiration, other molecules such as carbohydrates, fats, and proteins can also be broken down during this process. This highlights the versatility of respiration in utilizing different energy sources.

3. **Energy Release**: The breakdown of these molecules during respiration results in the release of energy. This energy is often stored in the form of ATP (adenosine triphosphate), which is the energy currency of the cell.

4. **Catabolic Process**: Respiration is classified as a catabolic process. Catabolism refers to the metabolic pathways that break down molecules into smaller units, releasing energy in the process. This is in contrast to anabolic processes, which build larger molecules from smaller ones.

5. **Weight Change**: As respiration involves the breakdown of larger molecules into smaller ones, there is often a decrease in the overall weight of the substrate being metabolized. This is a characteristic feature of catabolic reactions.

6. **Conclusion**: Based on the understanding that respiration is a catabolic process that leads to the breakdown of substrates and the release of energy, we can conclude that respiration is accompanied by a decrease in weight.

7. **Correct Option**: Therefore, the correct option to the question "Respiration is accompanied by" is the one that states it is associated with a decrease in weight.

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